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China Communications 2022年第1期19卷 40-51页

作者： ziyong li Yuxiang Hu Di Zhu JiangxingWu Yunjie Gu PLA Strategic Support Force Information Engineering University Zhengzhou 450002China 61660 Unit of PLA Beijing 100089China

The Space-Air-Ground Integrated Network(SAGIN) realizes the integration of space, air,and ground networks, obtaining the global communication coverage.Software-Defined Networking(SDN) architecture in SAGIN has become a promising solution to guarantee the Quality of Service(QoS).However, the current routing algorithms mainly focus on the QoS of the service, rarely considering the security requirement of flow. To realize the secure transmission of flows in SAGIN, we propose an intelligent flow forwarding scheme with endogenous security based on Mimic Defense(ESMD-Flow). In this scheme, SDN controller will evaluate the reliability of nodes and links, isolate malicious nodes based on the reliability evaluation value, and adapt multipath routing strategy to ensure that flows are always forwarded along the most reliable multiple paths. In addition, in order to meet the security requirement of flows, we introduce the programming data plane to design a multiprotocol forwarding strategy for realizing the multiprotocol dynamic forwarding of flows. ESMD-Flow can reduce the network attack surface and improve the secure transmission capability of flows by implementing multipath routing and multi-protocol hybrid forwarding mechanism. The extensive simulations demonstrate that ESMD-Flow can significantly improve the average path reliability for routing and increase the difficulty of network eavesdropping while improving the network throughput and reducing the average packet delay.

关键词： space-air-ground integrated network(SAGIN) endogenous security multipath routing multi-protocol forwarding

Efficient blue light-responsed dithienylethenes with exceptional photochromic performance

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Chinese Chemical Letters 2023年第3期34卷 392-395页

作者： ziyong li Xinyu Gao Haining Zhang Xiaoxie Ma Yifang liu Hui Guo Jun Yin College of Food and Drug College of Chemistry and Chemical EngineeringLuoyang Key Laboratory of Organic Functional MoleculesLuoyang Normal UniversityLuoyang 471934China College of Chemistry Key Laboratory of Pesticide and Chemical BiologyMinistry of EducationHubei International Scientific and Technological Cooperation Base of Pesticide and Green SynthesisInternational Joint Research Center for Intelligent Biosensing Technology and HealthCentral China Normal UniversityWuhan 430079China

Three novel dithienylethenes modified by bifluoroboron β-diketonate fragments have been successfully developed. Upon blue light irradiation, they reached photostationary state within 2-5 s, as well as 100% conversion ratio and photocyclization quantum yield of > 0.70. Such fascinating photochromism were endowed by collaborative role of electron-withdrawing effect of BF_(2)bdk group to reduce HOMO-LUMO electronic gap for the open isomer, together with intramolecular hydrogen bonds and CH-π interactions favoring antiparallel conformation fixation. Moreover, they displayed specific discrimination and photoswitchable bacterial imaging for S. aureus.

关键词： Dithienylethene Photochromism Fluorescent switching behavior Visible light Bifluoroboronβ-diketonate(BF_(2)bdk) Bacterial imaging

Membrane-targeting amphiphilic AIE photosensitizer for broad-spectrum bacteria imaging and photodynamic killing of bacteria

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中国化学快报:英文版 2023年第9期34卷 183-187页

作者： Haining Zhang Chaojun He limin Shen Wenjun Tao Jianhui Zhu Jinzhao Song ziyong li Jun Yin Luoyang Key Laboratory of Organic Functional Molecules College of Food and DrugLuoyang Normal UniversityLuoyang 471934China Key Laboratory of Pesticide and Chemical Biology Ministry of EducationHubei International Scientific and Technological Cooperation Base of Pesticide and Green SynthesisInternational Joint Research Center for Intelligent Biosensing Technology and HealthCollege of ChemistryCentral China Normal UniversityWuhan 430079China

An amphiphilic AIE photosensitizer has been successfully developed,which allows for easily inserting into the bacterial membranes.Binding experiments with phospholipid preliminary demonstrates its membrane specificity.As expected,it is proved to possess a broad-spectrum bacterial staining performance and photodynamic antibacterial activity toward S.aureus and E.coli.

关键词： Photodynamic therapy Aggregation-induced emission Photosensitizer Membrane-targeting Singlet oxygen Broad-spectrum Bacteria imaging

EARS: Intelligence-Driven Experiential Network Architecture for Automatic Routing in Software-Defined Networking

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China Communications 2020年第2期17卷 149-162页

作者： Yuxiang Hu ziyong li Julong Lan Jiangxing Wu Lan Yao Information Engineering University

Software-Defined Networking(SDN)adapts logically-centralized control by decoupling control plane from data plane and provides the efficient use of network resources.However,due to the limitation of traditional routing strategies relying on manual configuration,SDN may suffer from link congestion and inefficient bandwidth allocation among flows,which could degrade network performance significantly.In this paper,we propose EARS,an intelligence-driven experiential network architecture for automatic routing.EARS adapts deep reinforcement learning(DRL)to simulate the human methods of learning experiential knowledge,employs the closed-loop network control mechanism incorporating with network monitoring technologies to realize the interaction with network environment.The proposed EARS can learn to make better control decision from its own experience by interacting with network environment and optimize the network intelligently by adjusting services and resources offered based on network requirements and environmental conditions.Under the network architecture,we design the network utility function with throughput and delay awareness,differentiate flows based on their size characteristics,and design a DDPGbased automatic routing algorithm as DRL decision brain to find the near-optimal paths for mice and elephant flows.To validate the network architecture,we implement it on a real network environment.Extensive simulation results show that EARS significantly improve the network throughput and reduces the average packet delay in comparison with baseline schemes(e.g.OSPF,ECMP).

关键词： software-defined networking(SDN) intelligence-driven experiential network deep reinforcement learning(DRL) automatic routing

AI+BIM在水利水电工程施工安全管理中的应用价值研究

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现代工程科技 2024年第9期3卷 81-84页

作者：李自勇山东天鑫土木工程股份有限公司山东聊城252000

水利水电工程项目普遍存在现场施工复杂,施工安全管理难度大,施工安全风险高等情况。为了提升水利水电工程施工安全管理效益,实现水利水电工程项目施工安全管理的智能化发展,从BIM在水利水电工程项目的应用场景、安全管理能效、安全管... 详细信息

水利水电工程项目普遍存在现场施工复杂,施工安全管理难度大,施工安全风险高等情况。为了提升水利水电工程施工安全管理效益,实现水利水电工程项目施工安全管理的智能化发展,从BIM在水利水电工程项目的应用场景、安全管理能效、安全管理模式、施工安全评估等方面分析了AI+BIM在水利水电工程施工安全管理中的应用,剖析了AI+BIM在水利水电工程施工安全管理中的应用价值。研究提出的基于AI+BIM的水利水电工程施工安全管理策略,可实现水利水电项目工程管理的集成化,实时预测现场风险,并降低水利水电施工现场事故发生率。基于AI+BIM水利水电工程施工安全管理可以进一步推动水利水电项目施工安全管理模式创新,推动水利水电工程安全管理智慧化发展,实现水利水电智慧工程的创建。

关键词：水利水电工程施工 AI BIM 智慧工程

Construction of Crown Ether-Stoppering [3]Rotaxanes Based on N-Hetero Crown Ether Host

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Chinese Journal of Chemistry 2017年第7期35卷 1050-1056页

作者： Xie Han ziyong li Zhiqiang Xu Zhiyong Zhao Sheng Hua liu Jun Yin Key Laboratory of Pesticide and Chemical Biology Ministry of Education College of Chemistry Central China Normal University Wuhan Hubei 430079 China College of Chemical Engineering and Technology Wuhan University of Science and Technology Wuhan Hubei 430081 China College of Food and Drug Luoyang Normal University Luoyang Henan 471022 China

Crown ether usually plays the role of macrocyclic host in supramolecular chemistry, but here the crown ether is also utilized as the stoppers in rotaxanes. In this work, we designed and synthesized two [3]rotaxanes containing four crown ether components by using an approach of template-directed clipping reaction, of which, two crown ether components were employed as the macrocyclic hosts to assemble the mechanically interlocked framework while another two crown ether units located on the two ends of ammonium template acting as the stoppering groups of rotaxanes. Their self-assembling process was monitored by the 1H NMR and one of the single crystal structures of [3]rotaxane was obtained.

关键词： crown ether rotaxane clipping reaction

Granular Carbides-Assisted Ultrafine-Ferrite Fabrication in the Pearlitic Steel Without Severe Plastic Deformation and Annealing

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Acta Metallurgica Sinica(English Letters) 2020年第12期33卷 1645-1656页

作者： Han Zheng liming Fu Xinbo Ji ziyong li Yanle Sun Sixin Zhao Wei Wang Aidang Shan School of Materials Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China Central Research Institute(R&D Center) Baoshan Iron&Steel Co.LTDShanghaiChina

The evolution of ferrite grain and cementite lamella during cold rolling in a granular carbide–pearlite steel has been investigated.Particular attention has been given to a quantitative characterization of changes in the ferrite grains.Electron backscattered diff raction and transmission electron microscopy observations show that the ultrafi ne ferrite(~388 nm)can be produced through low equivalent strain cold rolling without severe plastic deformation(SPD)and annealing.The average grain size of ferrite depends on the volume fraction,shape and distribution of granular carbides as well as interlamellar spacing of pearlite.A general explanation of granular carbides-assisted grain refi nement is that the embedded carbides between natural barrier will signifi cantly facilitate dislocation nucleation during cold rolling.Dislocation reaction occurs more drastically and quickly near these granular carbides.Such reactions promote the formation of high-angle grain boundaries.The formation of ultrafi ne ferrite grains and subgrains in steel after cold rolling toε=1.4 strain makes the strength and ductility increased simultaneously compared withε=0.6 cold-rolled steel.The results suggest a new material design strategy to obtain ultrafi ne-grained structure via the granular carbides assistance.

关键词： Grain refinement Carbide Pearlitic steel Cold rolling

Additive manufacturing of thin electrolyte layers via inkjet printing of highly-stable ceramic inks

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Journal of Advanced Ceramics 2021年第2期10卷 279-290页

作者： Zhongqi Zhu Zhiyuan Gong Piao Qu ziyong li Sefiu Abolaji Rasaki Zhiyuan liu Pei Wang Changyong liu Changshi Lao Zhangwei Chen Additive Manufacturing Institute Shenzhen UniversityShenzhen518060China

Inkjet printing is a promising alternative for the fabrication of thin film components for solid oxide fuel cells(SOFCs) due to its contactless, mask free, and controllable printing process. In order to obtain satisfying electrolyte thin layer structures in anode-supported SOFCs, the preparation of suitable electrolyte ceramic inks is a key. At present, such a kind of 8 mol% Y_(2)O_(3)-stabilized ZrO_(2)(8 YSZ) electrolyte ceramic ink with long-term stability and high solid loading(> 15 wt%) seems rare for precise inkjet printing, and a number of characterization and performance aspects of the inks, such as homogeneity, viscosity, and printability, should be studied. In this study, 8 YSZ ceramic inks of varied compositions were developed for inkjet printing of SOFC ceramic electrolyte layers. The dispersing effect of two types of dispersants, i.e., polyacrylic acid ammonium(PAANH4) and polyacrylic acid(PAA), were compared. The results show that ultrasonic dispersion treatment can help effectively disperse the ceramic particles in the inks. PAANH4 has a better dispersion effect for the inks developed in this study. The inks show excellent printable performance in the actual printing process. The stability of the ink can be maintained for a storage period of over 30 days with the help of initial ultrasonic dispersion. Finally, micron-size thin 8 YSZ electrolyte films were successfully fabricated through inkjet printing and sintering, based on the as-developed high solid loading 8 YSZ inks(20 wt%). The films show fully dense and intact structural morphology and smooth interfacial bonding, offering an improved structural quality of electrolyte for enhanced SOFC performance.

关键词： inkjet printing water-based ceramic ink solid oxide fuel cell(SOFC)electrolyte 8YSZ ink stability rheological properties

抛物线(二次函数)割线和切线平行性问题的证明与推广

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河北省科学院学报 2024年第2期41卷 1-12页

作者：董冠文李自勇王彩琴何长林甘肃机电职业技术学院甘肃天水741000

介绍了抛物线(二次函数)上割线和切线平行性问题,并用数值均差法证明了抛物线(二次函数)上割线和切线平行性问题的结论,分两次推广了抛物线(二次函数)上割线和切线平行性问题的相关结论。

关键词：抛物线数值均差法割线切线

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高次多项式函数的“平行性”问题

哈尔滨师范大学自然科学学报 2024年第1期40卷 9-14页

作者：董冠文李自勇王彩琴何长林甘肃机电职业技术学院

通过研究二次函数的割线斜率与切线斜率相等即割线与切线相互平行,得到的条件为:该二次函数与割线两交点的横坐标数值的平均值等于该二次函数与切线切点的横坐标数值.进而将二次函数的这种切割线“平行”特性推广到高次多项式函数.采用... 详细信息

通过研究二次函数的割线斜率与切线斜率相等即割线与切线相互平行,得到的条件为:该二次函数与割线两交点的横坐标数值的平均值等于该二次函数与切线切点的横坐标数值.进而将二次函数的这种切割线“平行”特性推广到高次多项式函数.采用数值均差法证明了由二次函数的切割线“平行”特性推广到高次多项式函数后的结论,此结论与高次多项式的最高次数和导数阶数有关.

关键词：割线切线 “平行”特性数值均差法高次多项式函数最高次数